Expansion-joint installer



April 3, 1928. v 1,664,605

A. C. FISCHER EXPANSION JOINT INSTALLER Filed July 16, 1925 PatentedApr. 3, 1928. i I

-,uNiTso STATES PATENT OFFICE.

ALBERT-G. msonnn, or cnrcaeo, ILLINOIS.

' EXPANSION-JOINT INSTALLER.

lpplication filed July 16, 1925. Serial No. 44,187.

In the laying of concrete roads it is of primary importance that theexpansion joints laid therein are vertical, in order to give anabsolutely square face to the concrete slabs, and it is desirable at alltimes to eliminate the wave which may be formed in the joint during warmweather, which may make an irregular face to the concrete slab.

My invention relates to a contrivance which is simple in form and yeteflective in meeting various requirements for this purpose.- One is toso anchor the expansion joint in place that the'concrete first pouredagainst it comes in direct contact with the sides sufiiciently to holdthem in place while the remainder of the concrete batch is being put inplace.

slots are made-to receive pins. These slots are placed beside each otheron either side of the joint when laying the two angles in place and thepin is then placed through the slots and a notch at the top of the pm isutilized to lock the angles into place, holding them tightly against theside of the joint, thus eliminating any wave effect and at the safnetime supporting the angles in position so that the projecting ends ofthe pins can be driven into the ground. After the concrete is p'ouredagainst this joint with the installing device, it is only necessary topress the pin back, releasing the lock, removing thepin and thenremoving the anglles.

Figure 1 is a perspective view i ustrating the application of theinstalling device to a preformed expansion joint strip.

Figure 2 is a detailed perspective view of the staking device.

Fi re 3 is a detailed perspective view of one orm of angle plate.

Figure 3 is a similar view of a modified form of an angle form; and

Figure 4 is a view in section showing a joint installation made with theuse of the installing device. A better understanding of the inventioncan be had by referring to Figure 1, in which A represents the strip ofexpansion jointto portions as at D--D, ,and the pin E,E

placed through the slots OC in the flanges DD of the angles. At F isshown the notched shape of the pin which engages be neath the flangedprojections of D-D' of the angle BB. Y

In Figure 3 is shown an angle B witha flanged projection D having slotsplaced in the flanges as at O. The purpose of these slots isto serve asa receptacle for the pin which holds the two angles into place or theone angle if only one is used, as the contrivance is so arranged thateither one or two angles may be used. The flange is also utilized' forthe purpose of engaging the lock on the pin F.

Referring to Figure 2 in which is shown the pin itself which consists ofa piece of metal turned over, allowing for a crown as at E anddownwardly projected prongs as at EE having'the upper crown portionrecede to form a locking device as at FF.

-When this pin is placed through the slots in the angles it is presseddown and moved forward until the notches at FFenga 0 below theangle.flangesD-D. This holds the angles tightly against the expansionjoint A, and prevents it waving or'sagging in hot weather. a

In Figure 4 is described an im ortant function of this installingdevice, as t e concrete ispermitted to set immediately against the lowerfaces of the joint, while owing to the anglesbeing removed slightrecesses are formed on either side of the joint which it may bedesirable to fill with hot liquid matter or paint in order to obtainpositive ad hesion and an absolute water-proof crown 'to the 'oint.Thisis in consequence of this st 1e 0 installer and a result of theremoval 0 said plates.

I do not wish to be limited to this particu- I lar style of structure asit may be satisfactory to have a lug astened to a flat plate and the inengaged beneath the lug, as shown in igure 5, in which B represents theplate and JJ the lugs. On the other hand, one of the angles may beomitted entirely and the pin p aced through one angle on one side and"merely over 'the expansion joint. on the other side, thus utilizingonly one plate.

I claim 1. --An device for expansion joints, comprising a pair of metalplates adapted to enter into embracing relation with opposed sides of anexpansion joint, said plates having outwardly presented flanges,openings in the flanges, and stakes separable from the plates adapted toengage said openings and extend downwardly over the sides of the jointfor holding the plates to the joint and Vertically support the jointprior to the formation of the concrete sections between which the jointis to be installed.

2. An installing device for expansion joints, comprising a pair of metalplates adapted to enter into embracing relation with opposed sides of anexpansion joint, said plates having outwardly presented flanges,openings in the flanges, and stakes separable from the plates adapted toengage sald openings and extend downwardly over the sides of the jointfor holding the plates to the joint and vertically support the jointprior to the formation of the concrete sections between which the jointis to be installed, said stakes and plates being detachable from thejoint after the same has been installed between said concrete sections.

3. A joint installing device comprising a pair of flanged plates havingopenings therein, and staking means for holding the plates in embracingrelation with the joint and flush with the upper edge thereof, saidstaking means comprising an inverted U-shaped pin, said pin adapted toextend through said openings in the flanges of the plates and straddlethe plate substantially as and for the purpose described.

4. An installing device for expansion joints, comprising a pair offlanged plates having openings therein, and an inverted U- shaped pinengaging the openings in the flanges and straddling the plates, forholding the plates with their sides in parallel spaced relation.

5. An installing device for expansion joint strips comprising a plateadapted to lie against the side of the strip, and a staking device forholding the plate in embracing relation with the strip, said stakingdevice adapted to interlock with the plate and having a head portionadapted to extend across the crown of the strip.

6. In an installing device for expansion joint strips, a plate, a flangeon the plate having an opening therein and means adapted to engage saidopening in the flange and interlock with the flange. for holding theplate against the side of an expansion joint strip. v

7. In an installing device for expansion joint strips, a plate, a flangeon the plate having an opening therein and means adapted to engage saidopening and interlock with said flange for holding the plate against theside of an expansion joint strip, comprising a stake and a notched headon the stake engaging the plate flange through the said opening therein.

8. In an installing device for expansion joint strips, a plate, a flangeon the plate having an opening therein, and means adapted to engage saidopening and interlock with said flange for holding the plate against theside of an expansion joint strip, comprising an inverted U-shaped stakeadapted to straddle the expansion joint strip,

and a notched head on said stake adapted to engage the flange throughsaid opening therein.

In testimony whereof I have signed my name to this specification, onthis 14th day of July, A. D., 1925.

ALBERT C. FISCHER

